Jetting piles in is a common practice in sandy or very silty soils, even with large concrete piles in coastal areas. It gets them to a depth very quickly, but after that point, they still have to be struck for load testing. Typically, if the soils are very high in clay, you can forget jetting. I am not sure what the soils are like in Texas.


The biggest problem and should be his concern is a building permit. With out proper engineering controls showing that the foundation piles will support the building, he will never get one.

That is not even touching on his liability for not having an engineer design it. Keep in mind, hes building a house.